fix: make file events great again!

- Fix the the extension method to get the media folder from a path to refresh the library itself when adding files for new series not in the media library.

Shokofin/Configuration/MediaFolderConfigurationService.cs

@@ -17,7 +17,7 @@ namespace Shokofin.Configuration;
 public static class MediaFolderConfigurationExtensions
 {
     public static Folder GetFolderForPath(this string mediaFolderPath)
-        => BaseItem.LibraryManager.GetItemById(mediaFolderPath) as Folder ??
+        => BaseItem.LibraryManager.FindByPath(mediaFolderPath, true) as Folder ??
             throw new Exception($"Unable to find folder by path \"{mediaFolderPath}\".");
 
     public static IReadOnlyList<(int importFolderId, string importFolderSubPath, IReadOnlyList<string> mediaFolderPaths)> ToImportFolderList(this IEnumerable<MediaFolderConfiguration> mediaConfigs)